Nuclear hyperfine coupling constants of indium monoiodide determined by Fourier-transform, microwave spectroscopy

2006 ◽  
Vol 239 (1) ◽  
pp. 126-129 ◽  
Author(s):  
Nicholas R. Walker ◽  
Simon G. Francis ◽  
Joshua J. Rowlands ◽  
Anthony C. Legon
Keyword(s):  
Fourier Transform ◽  
Hyperfine Coupling ◽  
Microwave Spectroscopy ◽  
Coupling Constants ◽  
Hyperfine Coupling Constants ◽  
Fourier Transform Microwave Spectroscopy

Rotational spectrum and properties of the hydrogen-bonded heterodimer H 2 O· · · HCN from pulsed-nozzle, Fourier-transform microwave spectroscopy

1984 ◽  
Vol 396 (1811) ◽  
pp. 405-423 ◽  
Keyword(s):  
Fourier Transform ◽  
Microwave Spectroscopy ◽  
Coupling Constants ◽  
Spectroscopic Constants ◽  
Rotational Spectrum ◽  
Quadrupole Coupling ◽  
Nuclear Quadrupole ◽  
Fourier Transform Microwave Spectroscopy ◽  
Pulsed Nozzle ◽  
Hydrogen Bonded

The ground state rotational spectrum of a hydrogen-bonded heterodimer formed from water and hydrogen cyanide has been detected and measured by using the technique of pulsed-nozzle, Fourier-transform microwave spectroscopy. Rotational constants ( B 0 , C 0 ) centrifugal distortion constants ( ∆ J , ∆ JK ) and, where appropriate, 14 N-, D- or 17 O-nuclear quadrupole coupling constants have been determined for the following isotopic species; H 2 16 O· · · HC 14 N, H 2 18 O· · · HC 14 N, H 2 16 O· · · HC 15 N, HD 16 O· · · HC 15 N, D 2 16 O· · · HC 15 N, H 2 16 O· · · DC 15 N, HD 16 O· · · DC 15 N and H 2 17 O· · · HC 15 N. An analysis of these spectroscopic constants indicates that the heterodimer is effectively planar, with a pair of equivalent protons and the arrangement H 2 O· · · HCN. The intermolecular interaction is through a hydrogen bond between HCN and H 2 O and the distance between the O and C nuclei r (O· · · C) is 3.157 Å (1Å = 10 -10 m). An interpretation of the nuclear quadrupole coupling constants leads to the conclusion that arccos <cos 2 Φ > ½ ≈ 51°, where Φ is the angle between the local C 2 axis of H 2 O and the a -axis of the complex; and that arccos <cos 2 θ > ½ ≈ 10°, where θ is the angle between the HCN axis and the a -axis. The intermolecular stretching force constant k σ = 11 Nm -1 has been determined from ∆ J .

Hyperfine Structure in the Microwave Spectrum of Trifluorophosphine Oxide and Sulfide

1987 ◽  
Vol 42 (12) ◽  
pp. 1415-1417 ◽  
Author(s):  
Eric R. Bittner ◽  
José Matos ◽  
Kurt W. Hillig ◽  
Robert L. Kuczkowski
Keyword(s):  
Fourier Transform ◽  
Hyperfine Structure ◽  
Microwave Spectroscopy ◽  
Microwave Spectrum ◽  
Coupling Constants ◽  
Phosphine Oxides ◽  
Coupling Constant ◽  
Microwave Spectra ◽  
Quadrupole Coupling ◽  
Fourier Transform Microwave Spectroscopy

The microwave spectra of 17OPF3 and 33SPF3 were investigated by Fourier transform microwave spectroscopy and the 17O and 33S quadrupole coupling constants were determined. The 17O coupling constant is compared with several others from related phosphine oxides to characterize the π-bonding in these systems.

The 33S Nuclear Quadrupole Hyperfine Coupling in the Rotational Spectrum of 33S Dimethylsulfoxide

1995 ◽  
Vol 50 (7) ◽  
pp. 666-668 ◽  
Author(s):  
U. Kretschmer
Keyword(s):  
Fourier Transform ◽  
Molecular Beam ◽  
Hyperfine Coupling ◽  
Microwave Spectroscopy ◽  
Coupling Constants ◽  
Rotational Spectrum ◽  
Isotopic Abundance ◽  
Natural Isotopic Abundance ◽  
Quadrupole Coupling ◽  
Nuclear Quadrupole

The rotational spectrum of the 33S dimethylsulfoxide in natural isotopic abundance has been studied using molecular beam Fourier transform microwave spectroscopy. Rotational and quadrupole coupling constants could be extracted from the spectra. They were found to be A = 7017.5456(16) MHz, B = 6894.5117(17) MHz, C=4218.14115(84) MHz, χaa-15.720(18) MHz, χbb= -17.045(23), and χcc = 32.765(25) MHz.

Fourier transform microwave spectroscopy of HSiBr: Exploring the Si–Br bond through quadrupole hyperfine coupling

2005 ◽  
Vol 122 (21) ◽  
pp. 214314 ◽  
Author(s):  
Brandon S. Tackett ◽  
Dennis J. Clouthier ◽  
Jennifer N. Landry ◽  
Wolfgang Jäger
Keyword(s):  
Fourier Transform ◽  
Hyperfine Coupling ◽  
Microwave Spectroscopy ◽  
Fourier Transform Microwave Spectroscopy
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